Shipwright&#39;s level



R. MACDONALD.-

SHIPWRIGHTS LEVEL.

APPLxcATloN FILED 050.26.1919.

R. MACDONALD.

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-R. MACDONALD.

sHlPwRLGHTs LEVEL. APPLICATION FILED DEC. 26, 1919.

lPatented Nov. 23, 1920.

3 SHEETS-SHEET 3. l

-' RONAIJID MACDONALD, 0F SEATTLE," WASHINGTON.

' sHIPWRIGHTs LEVEL.

speeincation'of Letta-grama a Patented NOV, 235.1920,

Applicationfled December 26, 1919. Serial No'. 347,352.

T 0 all 'whom t may concer/1t `1 Be it known that I, RONALD MAoDoNALD,

a subject of the King of England,residing at'V Seattle, in the'county-oliing andState of llfashington, have invented certain new and usefulImprovements -in Shipwrights- Levels," of which the following is aspecilication, refi l dials 8 (Fig. 1). Eachleve'l device is similarlyconstructed,

ereneebeing had thereinft'o the accompanying drawings.

This invention `relates toashi'pwrights level, and the object' i's"theiconstructi'on of a level that 'is eilicient 'and' accurate -inopera# tion, and which vlevel"is'peculiarly@adapted'1' for use in theconstruction of vessels o'r inf th'ef repairing-o vesf making additionstoor sels.

' With this and-other? objects in'view,y my

' invention comprises certain novelfi combina1- t1ons,- constructions,IandVA arrangements of partsV as Qwillbe hereinafter vmore"specificallydescribed, illustrated inthe accompanying drawings, and 4moreparticularly pointed out in the appended claims.

' In the drawings,

Figure l is a view inside lelevation lof a level constructedin"acco1'dance"with'the present invention, lwhile Fig. 2 is a top planview of the same. l Fig. 3 is asection taken online 8 3, Fig. l, lookingin the direction of the4 arrows.

Fig.A 4 is a lsection-taken on'` line 4-45-F ig.

1, looking in the-direction of the arrows.

Fig. V5 is-al lfragmentary,fend view v'of the level partly'showninsection. with itsfglassesf20 and (21in' the desired ad- 4fjustedpOSitiOnZ'IThe "boltslocking device Fig. 6 isa perspective view o-:Ethe-bearing or liningy sleeve.

' Fig. 7 is a view in sideelevationfof-a'ves- Athe body 5,1 the platebeingfprovidedi'with sel'showing the' applicationY of' rnylevel,V todifferent parts.

Fig-8 is a 'view in side-felevation of a short `I n v declivity board. Ythe-.container for the head of bolt 1,5, the bolt ,.Fig.l 9 isa zviewinside'elevationfoalong f declivi'ty board, showing an ordinary=liousecarpenters levelth'ereon. f

Referring to the drawings bynuinerals, 1fYY I `121V and is f adapted tobear ,Y tightly against 3 is the-propeller andfl is the post. '-Theap-VYY ff plication lof my-improvedlevel1toy the-vessel level and itsadaptation to-diilerent-works.

My improved levelvcompri'sesanelongated...

shape, Jand in the body 5, near its ends, are

level deviceso and 7. Fastened upon the same side ofthe body 5 are two:brass ydials S, oneach of which are lines 9findicating "declivity, andon the rings 10 Yof the level devices are formed indicating lines 92Lwhich are'adapted to regi'ster with n'line -9 on' the Sis providedwithafperture'd lugs--l-S and* with the inner endof threaded bolt15".lLTheap-.

erture'd tlugs lf'ar'esetfdown inf the'body (F ig. 3f)an'dsuitablescrews 1-6 arefplaced inl-rtheseflugsforv fasteningthe.'v bearing orlining sleeve within the body A'Ysleeve-like vcasing 17 .is irotatab'lymounted" withinthe Ilining sleeve 12, an'd on .oneV end of thev casingis air-'annular 'flange 18, and on the other endlof the casing `17 isfdetachably fastened, by screws 19', the ring 101 'A levelglass 2Oyisfastened upon the casing 17, and also fas- "tened uponthe Icasingatrright .angles to f Vlevel-glass 20, is a' pair ofr'plumb` :glasses2l. l In' the operation cfmy level, thefoperator can grasp the ring 10and turn the casing to thedesiredposition", and' then-lock the casingbymeans of the =bolt=locking device'hereinafter' described, lso kas toretain the vcasing comprises-a plate 22 :placedover theend ofright-angled ends 22; the l`plate-is provided withfavcentral dishedlportion l23that`acts as through the'Y aperture 'le-'of the sleeve liningthe4 icasing V17,' whereby the casing can be against a surface or. object for levelingpurl 4body #5,; which Aisf:preiferablyrectangularin-ffposes gfthe-dishedportion 23isrlarge-enough lmanuallyfllnclredAiagainst rotation within the Y sleeve 12. "The positioning 'oi the v'head15 ydown into the'dished` portion 23 of: the'end Y plate allows thevendto be-ftightlyf'placed head.

to permit the operators lingers to extend therein, for manipulating thehead of the bolt 15. Y

Now, with reference to the adaptation or operation of my level underdiiferent conditions, I desire it to be understood that 25 (Fig.A 9) isa long declivity board, generally about twenty feet in length, and usedby shipwrights at present for laying the keel blocks. The ordinaryhouse-carpente1"s level 26 is placed upon the declivity board 25, andinterposed between a part of the level 26 and said board 25 is a wedge27 fastened to the declivity board preferably by screws 28. By slidinglevel 26 back or forward, the desired declivity is ascertained, whenproper declivity is obtained, the shipwright generally marks at 29 for acwitness mark. My improved level does away with the two tools shown inFig. 9, to wit: the declivity board 25 and the level 26, by combiningthe elements that will perform the function of the two in one level.

In the declivityboard 25 is formed a large aperture or opening 80, andin certain work on board a ship, it may be desirable to remove one ofthe casingsv 17 in my level, placing the casing with its glasses in theopening 30, which will enable me to use my improved level, with itsother positioned casing 17 therein, in conjunction with the declivityboard, and in certain places, by using my level with one of its glassesin conjunction with the declivity board, having one of the level devicesin opening 30, one operator can do the work of two.

InFig. 8,I have shown a short declivity board 31, about three feet long,which isV used when the ship is afloat for putting in any woodwork suchas capstans, cushions, stanchions, steel masts, and all woodwork thathas to go in plumb and parallel with the keel.

In Fig. 7, at 32, I have shown the short declivity board 31 and myimproved level in position for taking fore and aft level of rudder post4, when ship isdown in the To get thwartship levels, the other end ofthe declivity board will have to be used andcan be taken from port orstarboard side of rudder post 4t.

A hatch coaming 33 is usually provided with a level line 311 markedthere while the ship is on the ways, so that when the ship is launched,all necessary plumbing of the parts can be done from this line 34 as a Ybasis to work from. The position of my level at 35 (Fig. 7 illustratesthe picking of fore and aft level of hatch coaming to plumb mast 2. Toplumb opposite side of mast or stanchion, turn level and declivity boardupside down, as shown at 36; then, if mast shows plumb on both sides, itis correct. At 37, the level is shown doing the same work by taking thelevel on one side of the mast and then on the other side, turning thelevel upside down and bringing one of the glasses inone of the leveldevices into use so as to check up the work.

At 38 I have shown the hatch coaming and the taking of the level byusing my improved level instead of the method shown at 35. rEhe numeral29 l designates the level. line that is put on the hatch when the shipis on the Ways. When using my level, there is not the chance forconfusion as in the old way, and the level is not so clumsy as the othertools now used, and it does away with the use of one man, and when alevel or measurement is obtained and the casing 17 fastened in a slotpositioned by bolts 15, the

level can be used until a change is desired. Extending through the sidesof the body 5 (F ig. 4) is a locking screw 40 which serves to fasten thelocking` bolt 15 in an adjusted position, insuring the satisfactorylocking` of the casing 17 in its adjusted or desired position, thisscrew 40 being threaded through an opening formed in the hub-likeportion 2e of the dished part 23 of the. end plate 22.

What I claim is:

1. In a device of the class described, the combination of a bodyprovided with an opening, a lining sleeve provided at one edge withapertured lugs and positioned in said opening, said lugs seated in thebody,

fastening means extending through the apertures of the lugs forfastening the sleeve upon the body, a rotatable casing positioned withinsaid sleeve, said casing provided with an annular flange at one end, aring detachably fastened to the other end of saidcasing, and a levelglass mounted within said casing. o

2. In a device of the class described, the combination of a bodyprovided near one end with an opening, a dial positioned upon one sideof the body and contiguous to said opening, a level glass-carryingcasing rotatably mounted in said opening, a ring contiguous to said dialand detachably secured to the casings, and said dial and ring providedon their outer faces with markings for indicating the declivity of apart of a vessel. y

3. In a device of the class described, the combination with a bodyprovided with an opening, of a glass-carrying casing rotatably mountedin. said opening, a plate covers ing the end of said body, said platepro-4 vided with ends at right'angles thereto and with a central dishedportion, said dished portion provided with a hub-like portion, a

bolt threaded into the hub-like portion and :LioY

' 4. In a device of the class described, the

combination with a body provided with anopening, of a glass-carryingcasing rotatably mounted Within 'said opening, an end plate upon the endof said body, said end plate provided with a dished portion having anintegral hub-like extension projecting into the body, said hub-likeportion provided With a threaded opening at right angies to thelongitudinal axis of the hublile portion, a bolt threaded into thehublike portion and being adapted to engage at its inner end the outersurface of the rotatable casing for locking the casing in an adjustedposition upon the body, said bolt provided with a head normally downinthe dished-like portion, and a locking screw threaded into thethreaded opening of the hub-like portion at right angles to thelongitudinal axis of said hub-lke portion, and

said locking screw kadapted to lock the bolt*- against accidentalmovement, substantially as shown and described. f

5. In a device of the class described, the

combination with a body, of a casing carrying a level glass movablymounted upon said body, a rotatable locking device carried by said bodyand adapted to engage said casing for preventing movement thereof uponthe body, and an auxiliary locking device upon the bodyl and at an angleto the first-mentioned locking device for retaining the rst-mentionedlocking device against accidental movement, to insure the securefastening of the movable casing in an adjusted position upon the body.

In testimony whereof I hereunto affix my signature.

RONALD MACDONALD.

